A(n)_____ is characterized by the researcher's altering one or more variables-such as price or package design--while observing the effects of those alterations on another variable (usually sales).

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An experiment is a method a researcher can use to gather primary data and entails the researchers altering one or more variables while observing the effects of those alterations on another variable.

A(n)_____ Is Characterized by the Researcher's Altering One or More